CN216793939U - Battery protection assembly and terminal equipment - Google Patents

Abstract

The utility model provides a battery protection assembly and terminal equipment, wherein the battery protection assembly comprises a shell and a battery protection plate, at least part of the battery protection plate is positioned in the shell, cooling liquid for cooling the battery protection plate is filled in the shell, at least part of the battery protection plate penetrates through the shell to be connected with a battery, and the terminal equipment comprises the battery protection assembly. According to the battery protection assembly provided by the embodiment of the utility model, the battery protection plate is arranged in the shell, at least part of the battery protection plate penetrates through the shell to be connected with the battery, the part of the battery protection plate penetrating through the shell is sealed, and the cooling liquid is filled in the shell and coats the battery protection plate in the shell. The packaging of the immersion type liquid cooling battery protection board is realized, and the battery protection board in the battery charging process is rapidly cooled by utilizing the high heat capacity of the cooling liquid and the heat convection effect of the liquid.

Description

Battery protection assembly and terminal equipment

Technical Field

The utility model relates to the technical field of mobile terminals, in particular to a battery protection assembly and terminal equipment.

Background

In order to increase the charging speed of a mobile terminal of a mobile phone/tablet, the electronic design of a PCM (Pulse code modulation) protection board of a battery is becoming more complicated for the higher and higher charging power of the terminal device. However, as the charging power is increased, the temperature rise of the PCM protection board of the battery becomes serious, and the temperature rise problem of the PCM protection board of the battery is also one of bottleneck points limiting the increase of the charging power of the mobile terminal. Among the correlation technique, solve PCM temperature rise problem mainly through the width that increases the PCM protection shield, further promote heat radiating area and remove the solution, but this kind of scheme is not obvious to the effect that reduces the PCM temperature rise, still can lead to PCM panel's occupation space grow, because mobile terminal inner space is limited, PCM protection shield grow can lead to the mobile terminal volume to increase, is unfavorable for mobile terminal's frivolousization development.

SUMMERY OF THE UTILITY MODEL

The present invention is based on the discovery and recognition by the inventors of the following facts and problems:

in the correlation technique, through the width that increases the PCM protection shield to promote heat radiating area, remove to solve PCM temperature rise problem. Because mobile terminal inner space is limited, can only be on original basis the width of increase PCM protection shield of small amplitude, otherwise can lead to mobile terminal's volume increase, be unfavorable for mobile terminal's frivolousization development. Therefore, the way to increase the width of the PCM protection board has the following problems: the expanded heat dissipation area is small, the heat dissipation efficiency is low, and the effect of reducing the PCM temperature rise is not obvious. Therefore, a method that does not change the width of the original PCM protection board and can also obviously reduce the temperature needs to be selected to solve the temperature rise problem of the PCM.

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the embodiment of the utility model provides a battery protection assembly, which effectively solves the problem of battery temperature rise on the premise of ensuring that the width of a PCM (pulse code modulation) is smaller.

The embodiment of the utility model provides a terminal device with the battery protection assembly.

The battery protection assembly of the embodiment of the utility model comprises: the battery protection plate is at least partially positioned in the shell, cooling liquid for cooling the battery protection plate is filled in the shell, and at least part of the battery protection plate penetrates through the shell to be connected with a battery.

According to the battery protection assembly provided by the embodiment of the utility model, the battery protection plate is arranged in the shell, at least part of the battery protection plate penetrates through the shell to be connected with the battery, the part of the battery protection plate penetrating through the shell is sealed, and the cooling liquid is filled in the shell and coats the battery protection plate in the shell. The packaging of the immersion type liquid cooling battery protection board is realized, the high heat capacity of the cooling liquid and the heat convection effect of the liquid are utilized, and the battery protection board is rapidly cooled in the battery charging process, so that the negative influence on the battery caused by overhigh temperature rise of the battery protection board is avoided, and the service life of the terminal equipment is also prolonged.

Therefore, the battery protection assembly provided by the embodiment of the utility model solves the problem that the temperature rise of the battery protection plate is overhigh in the charging and discharging processes of the high-power battery.

In some embodiments, the battery protection board includes a protection board body and a nickel brick disposed on the protection board body, a through hole is disposed on the casing, and the nickel brick penetrates through the through hole to be connected to the battery.

In some embodiments, the battery protection board further comprises a flexible circuit board, one end of the flexible circuit board is located in the shell and connected with the battery protection board, and the other end of the flexible circuit board penetrates through the shell and is connected with the main board.

In some embodiments, the flexible printed circuit board further comprises a connection terminal, and the flexible printed circuit board is connected with the main board through the connection terminal.

In some embodiments, the housing includes an upper housing, a lower housing cover disposed at a lower end of the upper housing, a left housing cover disposed at a left end of the upper housing, and a right housing cover disposed at a right end of the upper housing, and the upper housing, the lower housing cover, the left housing cover, and the right housing cover are connected to form the housing having a substantially rectangular parallelepiped shape.

In some embodiments, the number of the nickel bricks is two, the lower shell cover is provided with two through holes, the two nickel bricks respectively penetrate through the two through holes and are connected with two tabs of the battery, the nickel bricks are in interference fit with the through holes, a connecting seam is arranged on the left shell cover or the right shell cover, the flexible circuit board penetrates through the connecting seam and is connected with the mainboard, and the flexible circuit board is in interference fit with the connecting seam.

In some embodiments, the housing is a metal housing or a plastic housing.

In some embodiments, the cooling fluid is a high thermal melting insulating cooling fluid.

In some embodiments, the cooling fluid is an electronic fluorination fluid.

The terminal equipment of the embodiment of the utility model comprises the battery protection assembly of any one of the embodiments.

Drawings

Fig. 1 is a schematic view of a battery protection assembly according to an embodiment of the present invention.

Fig. 2 is an exploded schematic view of a battery protection assembly according to an embodiment of the present invention.

Fig. 3 is a schematic structural view of the battery protection assembly according to the embodiment of the present invention, after the housing is removed.

Fig. 4 is a schematic view of a partial structure of a battery protection assembly according to an embodiment of the present invention.

Fig. 5 is a schematic view of a left housing cover of the battery protection assembly according to the embodiment of the present invention.

Reference numerals:

the shell comprises a shell 1, an upper shell 101, a lower shell cover 102, a through hole 1021, a left shell cover 103, a right shell cover 104 and a connecting seam 1031;

a battery protection plate 2, a protection plate body 201 and a nickel brick 202;

the flexible circuit board 3, the U-shaped section 301, the arc-shaped section 302 and the connecting section 303;

and a connection terminal 4.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

The battery protection assembly according to the embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in fig. 1, the battery protection assembly according to the embodiment of the present invention includes a case 1 and a battery protection plate 2, at least a portion of the battery protection plate 2 is located in the case 1, a cooling liquid for cooling the battery protection plate 2 is filled in the case 1, and at least a portion of the battery protection plate 2 is connected to a battery through the case 1.

It can be understood that the cooling liquid acts on the portion of the battery protection plate 2 located inside the housing 1, the portion of the battery protection plate 2 located outside the housing 1 is connected to the battery, and the sealing process is performed on the portion of the battery protection plate 2 passing through the housing 1. Under the condition of guaranteeing battery protection shield 2 and battery normal connection to ensure the holistic leakproofness of casing 1, the part that lies in casing 1 through the coolant liquid to battery protection shield 2 cools down, thereby solves the too high problem of temperature rise in the high power battery charge-discharge process.

Alternatively, the majority of the battery protection board 2 is located inside the casing 1, and a small portion of the battery protection board 2 penetrates the casing 1 and is located outside the casing 1, so that the normal connection with the battery is ensured. In other words, the battery protection plate 2 is mostly located in the housing 1, so that the cooling liquid is in large-area contact with the battery protection plate 2, thereby achieving a more efficient cooling effect.

Further, the mode of temperature rise problem is solved to the width of the amplification battery protection shield 2 among the contrast correlation technique, and the cooling mode of the battery protection subassembly of this embodiment not only need not to amplify 2 width of battery protection shield, can also be under the less prerequisite of 2 width of battery protection shields, through the effectual temperature rise problem of solving the battery of the mode of immersive liquid cooling.

Therefore, the cooling mode of the battery protection component of the embodiment indirectly improves the space utilization rate inside the battery, and avoids the increase of the volume of the battery caused by the amplification of the battery protection board 2, thereby leading to the increase of the volume of the mobile terminal and further meeting the development trend of terminal lightening and thinning.

According to the battery protection assembly provided by the embodiment of the utility model, the battery protection plate 2 is arranged in the shell 1, at least part of the battery protection plate 2 penetrates through the shell 1 to be connected with a battery, the part of the battery protection plate 2 penetrating through the shell 1 is subjected to sealing treatment, and cooling liquid is filled in the shell 1 and coats the battery protection plate 2 in the shell 1. The packaging of the immersion type liquid cooling battery protection board 2 is realized, the high heat capacity of the cooling liquid and the heat convection effect of the liquid are utilized, and the battery protection board 2 is rapidly cooled in the battery charging process, so that the negative influence on the battery caused by the overhigh temperature rise of the battery protection board 2 is avoided, and the service life of the terminal equipment is also prolonged.

In some embodiments, as shown in fig. 2, the battery protection plate 2 includes a protection plate body 201 and a nickel brick 202 disposed on the protection plate body 201, a through hole 1021 is disposed on the housing 1, and the nickel brick 202 is connected to the battery through the through hole 1021.

It can be understood that, by providing the through hole 1021 on the case 1, the nickel bricks 202 are connected to the battery through the through hole 1021, so that the connection between the battery protection plate 2 and the battery is more convenient and standard.

Alternatively, as shown in fig. 1 and 2, the nickel bricks 202 are disposed outside the housing 1 through the through holes 1021. The gap between the nickel brick 202 and the through hole 1021 can realize that the nickel brick 202 is hermetically assembled on the shell 1 by arranging a sealing rubber ring. Or, the gap between the nickel brick 202 and the through hole 1021 not only realizes the fixing effect of the nickel brick 202, but also plays a role in sealing the gap in a dispensing manner.

Therefore, the sealing of the gap between the nickel brick 202 and the through hole 1021 can be realized in different ways, and the materials of the corresponding shells 1 are different in different sealing ways.

Optionally, the nickel brick 202 is connected to the protection plate body 201 by welding, and the welding is automatic welding or reflow welding. Further, as is known to those skilled in the art, the nickel bricks 202 are welded to the protection plate body 201 by SMT (surface mount technology). After the SMT is generally adopted, the welding reliability is high, the vibration resistance is strong, the welding spot defect rate is low, the high-frequency characteristic is good, and when the mobile terminal is dropped and other accidents happen, the risk of physical connection disconnection is reduced, so that a certain protection effect is achieved. Moreover, automatic welding and pasting of the nickel bricks 202 can be realized, and the production efficiency is improved.

Specifically, as shown in fig. 1, the lower end of the nickel block 202 is disposed outside the case 1 through the through hole 1021, and the lower end of the nickel block 202 is connected to the battery. The upper end of nickel brick 202 welds in the lower surface of protection shield body 201, and the gap between nickel brick 202 and through-hole 1021 adopts silica gel to seal, realizes fixing between nickel brick 202 and the casing 1, also realizes fixing between protection shield body 201 and the casing 1.

In some embodiments, as shown in fig. 1 and 4, a flexible circuit board 3 is further included, one end of the flexible circuit board 3 is located in the housing 1 and connected to the battery protection board 2, and the other end of the flexible circuit board 3 passes through the housing 1 and is connected to a main board (a main board of a terminal device, not shown in the figures).

It is understood that the battery protection board 2 is connected to the main board through the flexible circuit board 3, and the flexible circuit board 3 is sealed through the housing 1 to prevent the coolant from being exposed.

Alternatively, as shown in fig. 4, one end of the flexible circuit board 3 located in the housing 1 is connected to the lower surface of the protection plate body 201, and one end of the flexible circuit board 3 located in the housing 1 is welded to the protection plate body 201 by automatic soldering or reflow soldering. One end of the flexible circuit board 3, which is positioned outside the shell 1, is connected with the mainboard.

Further, as shown in fig. 4, the portion of the flexible circuit board 3 outside the housing 1 is bent upward, so that the flexible circuit board 3 is U-shaped and is disposed above the housing 1. Flexible circuit board 3 has U-shaped section 301, segmental arc 302 and linkage segment 303, the one end of U-shaped section 301 is located casing 1 and links to each other with protection shield body 201, the other end of U-shaped section 301 and segmental arc 302 and linkage segment 303 all are located outside casing 1, the other end of U-shaped section 301, segmental arc 302 and linkage segment 303 link to each other in proper order, segmental arc 302 and linkage segment 303 all are located the front side of U-shaped section 301, linkage segment 303 level sets up.

In some embodiments, as shown in fig. 1 to 4, the flexible circuit board 3 further includes a connection terminal 4, and the flexible circuit board is connected to the main board through the connection terminal 4.

Alternatively, the connection terminal 4 is located below the connection section 303 of the flexible circuit board 3 and connected to the flexible circuit board 3, and the lower end of the connection terminal 4 is connected to the main board.

In some embodiments, as shown in fig. 2, the housing 1 includes an upper housing 101, a lower housing cover 102 disposed at a lower end of the upper housing 101, a left housing cover 103 disposed at a left end of the upper housing 101, and a right housing cover 104 disposed at a right end of the upper housing 101, and the upper housing 101, the lower housing cover 102, the left housing cover 103, and the right housing cover 104 are connected to form a substantially rectangular parallelepiped housing 1.

Alternatively, as shown in fig. 2, the upper casing 101 is U-shaped, and the upper casing 101, the lower casing 102, the left casing 103, and the right casing 104 are assembled into the casing 1 by welding or spot-sealing.

In some embodiments, as shown in fig. 2, there are two nickel bricks 202, two through holes 1021 are provided on the lower case cover 102, the two nickel bricks 202 respectively penetrate through the two through holes 1021 and are connected to two tabs of the battery, the nickel bricks 202 are in interference fit with the through holes 1021, a connection seam 1031 is provided on the left case cover 103 or the right case cover 104, the flexible circuit board 3 penetrates through the connection seam 1031 to be connected to the motherboard, and the flexible circuit board 3 is in interference fit with the connection seam 1031.

It will be appreciated that the tabs are located on the battery cells (not shown), and the nickel bricks 202 and the through holes 1021 are in interference fit, and the flexible circuit board 3 and the connecting seams 1031 are in interference fit, so as to ensure that the coolant does not leak through the seams.

Alternatively, as shown in fig. 2 and 5, two nickel bricks 202 are located below the protective plate main body, and the upper ends of the nickel bricks 202 are welded to the lower surface of the protective plate main body. A connecting seam 1031 is arranged on the left shell cover 103, the U-shaped section 301 of the flexible circuit board 3 penetrates through the connecting seam 1031, the dispensing treatment is carried out on the connecting seam 1031, and the seam is further sealed and the flexible circuit board 3 is fixed. After the nickel brick 202 is assembled into the through hole 1021, glue is dispensed at the through hole 1021, and the gap is further sealed and the nickel brick 202 is fixed.

In some embodiments, the housing 1 is a metal housing 1 or a plastic housing 1.

Alternatively, when the housing 1 is a metal housing 1, after the flexible circuit board 3 passes through the connection seam 1031, the connection seam 1031 is sealed by dispensing. And a sealing rubber ring is arranged at the through hole 1021, so that the nickel brick 202 is hermetically assembled with the lower shell cover 102. The upper shell 101, the lower shell 102, the left shell 103 and the right shell 104 can be hermetically assembled with the shell 1 by means of dispensing or welding.

Optionally, when the housing 1 is a plastic housing 1, the flexible circuit board 3 may be placed in a mold by in-mold injection molding, and the left housing cover 103 is injection molded, so as to implement the sealing assembly of the flexible circuit board 3 and the left housing cover 103. Similarly, the sealing assembly between the nickel brick 202 and the lower shell cover 102 is realized by means of in-mold injection molding. The upper shell 101, the lower shell 102, the left shell 103 and the right shell 104 are hermetically assembled in a dispensing manner.

Therefore, the material of the housing 1 is different, the sealing assembly method is also different, and the welding temperature is too high to be suitable for the plastic housing 1, which may cause damage to the plastic housing 1. In addition, the temperature of the dispensing is too high, and the optimal mode is to use in-mold injection molding for the sealing assembly between the plastic shell 1 and the flexible circuit board 3 as well as the nickel brick 202.

In some embodiments, the cooling fluid is a high thermal melting insulating cooling fluid.

It can be understood that the high-heat-fusion insulating cooling liquid fills the residual space inside the casing 1, which not only has the effect of cooling the battery protection board 2, but also improves the dielectric property thereof, thereby improving the energy density of the battery.

Specifically, the cooling liquid is an electronic fluorinated liquid which is colorless, odorless and non-conductive, has stable properties and has no influence on electronic equipment parts. And the electronic fluorinated liquid is an ideal heat dissipation material according to the relatively stable physical and chemical properties of the electronic fluorinated liquid and can not be ignited.

In summary, the following describes the composition process of the battery protection assembly according to the embodiment of the present invention.

The shell 1 is composed of an upper shell 101, a lower shell 102, a left shell 103 and a right shell 104, and the shell 1 is made of metal or plastic. The protection plate body 201 and the nickel brick 202 in the battery protection plate 2 are sealed and fixed with the shell 1 through silica gel interference fit, glue dispensing, welding and other modes, and the shell 1 is filled with the electronic fluorinated liquid.

At first with flexible circuit board 3 and left shell lid 103 realize sealed assembly, when the shell lid was the metal material, it has joint 1031 to open on the left shell lid 103, and flexible circuit board 3 passes joint 1031 and realizes the assembly with the shell lid, and the rethread mode of gluing realizes the sealed and fixed between flexible circuit board 3 and the left shell lid 103 of joint 1031 department. When the shell cover is made of plastic materials, the sealing assembly between the flexible circuit board 3 and the left shell cover 103 can be realized in an in-mold injection molding mode. After the assembly is completed, the flexible circuit board 3 is soldered to the battery protection plate 2.

Then, the nickel brick 202 and the lower shell cover 102 are hermetically assembled, and when the shell cover is made of plastic materials, the nickel brick 202 and the lower shell cover 102 can be hermetically assembled in an in-mold injection molding or dispensing mode; when the housing cover is made of metal, the nickel brick 202 and the lower housing cover 102 can be hermetically assembled by a sealing rubber ring and the like. After the assembly is completed, the nickel bricks 202 are welded to the battery protection plate 2 by SMT.

Finally, the upper shell 101, the lower shell 102, the left shell 103 and the right shell 104 are hermetically assembled together, and when the shell 1 is made of metal, the hermetic assembly can be realized in a welding and dispensing manner; when the shell 1 is made of plastic, sealing can be achieved through a dispensing mode. Before the right shell cover 104 is sealed, the shell 1 is injected with the electronic fluorinated liquid, so that the immersion type liquid cooling battery protection board 2 is packaged.

After the battery protection assembly is packaged, the exposed nickel bricks 202 and the electrode lugs on the battery are welded together, and the exposed flexible circuit board 3 is connected with a main board of a terminal through a connecting terminal 4. Utilize the high heat capacity of electron fluoridize liquid and the thermal convection effect of liquid, under the less prerequisite of guaranteeing battery protection board 2 width, realize battery protection board 2's rapid cooling to solve the too high problem of temperature rise in high power battery charge-discharge process, still indirect promotion the space utilization of battery, improved the energy density of battery.

The terminal device of the embodiment of the utility model comprises the battery protection assembly of any one of the embodiments.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. The battery protection assembly is characterized by comprising a shell and a battery protection plate, wherein at least part of the battery protection plate is positioned in the shell, cooling liquid for cooling the battery protection plate is filled in the shell, and at least part of the battery protection plate penetrates through the shell to be connected with a battery.

2. The battery protection assembly of claim 1, wherein the battery protection plate comprises a protection plate body and a nickel brick disposed on the protection plate body, the housing has a through hole, and the nickel brick is connected to the battery through the through hole.

3. The battery protection assembly of claim 2, further comprising a flexible circuit board, one end of the flexible circuit board being positioned within the housing and connected to the battery protection board, the other end of the flexible circuit board passing through the housing and connected to the motherboard.

4. The battery protection assembly of claim 3, further comprising a connection terminal through which the flexible circuit board is connected to a main board.

5. The battery protection assembly of claim 3, wherein the housing comprises an upper housing, a lower housing cover disposed at a lower end of the upper housing, a left housing cover disposed at a left end of the upper housing, and a right housing cover disposed at a right end of the upper housing, and the upper housing, the lower housing cover, the left housing cover, and the right housing cover are connected to form the housing having a substantially rectangular parallelepiped shape.

6. The battery protection assembly according to claim 5, wherein the number of the nickel bricks is two, the lower case cover is provided with two through holes, the two nickel bricks respectively penetrate through the two through holes and are connected with two tabs of the battery, and the nickel bricks are in interference fit with the through holes;

and the left shell cover or the right shell cover is provided with a connecting seam, the flexible circuit board penetrates through the connecting seam to be connected with the mainboard, and the flexible circuit board is in interference fit with the connecting seam.

7. The battery protection assembly of claim 1, wherein the housing is a metal housing or a plastic housing.

8. The battery protection assembly of claim 1, wherein the coolant is a high thermal melting insulating coolant.

9. The battery protection assembly of claim 1, wherein the cooling fluid is an electronic fluorinated fluid.

10. A terminal device characterized by comprising a battery protection assembly according to any one of claims 1-9.

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